A new web-based tool in Google Labs, called "Page Speed Online," which analyzes the performance of web pages and gives specific suggestions for making them faster is launched today. Page Speed Online is available from any browser, at any time. This allows website owners to get immediate access to Page Speed performance suggestions so they can make their pages faster.
Also, added a new feature: "ability to get Page Speed suggestions customized for the mobile version of a page, specifically smartphones."
"Due to the relatively limited CPU capabilities of mobile devices, the high round-trip times of mobile networks, and rapid growth of mobile usage, understanding and optimizing for mobile performance is even more critical than for the desktop, so Page Speed Online now allows you to easily analyze and optimize your site for mobile performance," explains Google.